lawnmower battery lithium ion conversion 18650 upgrade
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- čas přidán 17. 09. 2017
- This is the first video about my 18650 lithium ion battery upgrade for my Black and Decker 36 volt mower. It works!!! IT works well... This style of battery is very Tesla inspired. I may try to do a cooling setup for this battery. If you have any questions, comments or suggestions, leave them below! Hit that like button.
Spot Welder
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Strips
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Your video is awesome, thank you for sharing that. Thank you for commenting on my channel. Yes, I do need to get into 3D printing. I love your cell pack design!!! Let me know if you have any more tips!!! Frank The DIY Engineer
Love it!
Id try to make it if I could spot weld.
Love any 18650 project! Replace all the lead-acids!
yes yes yes yes yes yes yes ,,,,( breathe in).... yes yes yes yes yes yes
How many amp/hours is your battery pack ? noticed its a Westinghouse dirt cheap cells did it match or better the original lead acid[12ah rating.] also is your lithium pack able to supply the super large amp draw with headroom of the motor ? they pull around 45~55 amps under load no load is 20 amps just spinning the blade.
The battery just gets warm, even after mowing for a long time in thick grass.... Not hot. I'm amazed at it's performance and it's still going strong. Check out my other video where I test one of these cells. It's a clear 2000 mAh, so this is a 14ah pack, usable. I normally charge to 4.1 or 4.15 v and only bring it down to around 3.6v. I would not call these cells dirt heap after what I have put them through and seen their performance. Plus, normal price is 14 ish bucks a pack unless they are on sale. Not too cheap. Will consider doing an update video as soon as I can get back to making vids....
nice. good project.
thanks!
When can we see a video of the lawnmower in action ?
Carlos de la Cruz good question. So far I have 2 inches of snow to mow... So we gotta wait. What I can say is 1/3 of an acre does not really phase the mower and uses around half of the capacity. I'm very happy with the conversion. ... It pulls the voltage well too. Like it strongly cuts, if that makes sense. One of the old 12v batteries does not last for a my front yard only or back yard only... When the grass is thick. This battery does both with a grip to spare. No wonder those Tesla cars go so far.... Anyway, I'll try to post something but I'm going overseas next year so not likely untill the August ish timeframe
so cool, thanks for that
isn't it though? Thanks for the good words!
How long does the lawn mower run on the lithium batteries?
Just did 1/3 of an acre (9JUL2019) and there's still plenty of juice left on the charge. Maybe 30 percent to go.
Are you able to charge thoughs batteries with the original charger?
Original charger shut off @43v.
Lithium battery pack needs 42v , unless bms will have that function.
Did you follow up this video and did it catch fire?
Ah, never caught fire. Got rid of the mower. Have the cells still that I am going to take apart.... I think 😂. Sorry no vid. Hope to make more but they are tuff and so is life.
+TRY to HELP you
do you mind listing/credit awesome retro music you used?
Ora Labora when i get home ill look it up. Its on the youtube audio library...
Found it! (10 months later) ... it's called "Far Away" by MK2.
Where did you get the battery spacers...the blue or black ones you uses
designed and 3D Printed them myself... I used someone elses design to get the size of the circles right... and just went to town making the arrary in my 3D software. I will add that to the following video about this battery so you can get a better look.
did you put a BMS on it??
No, however it has two halves to it and I charge each half with a little ion balance charger. Balance on every charge
you dont balancing your batterys?
+niklaus stöckli i do with a balance charger! Check out my other videos for more info
LiFePO4 batteries are now available for this. But I still have not been able to find the electrical specs on the mower motor to order the LiFePO4 batteries with an adequate continuous amperage rating. What is the motor wattage, or HP, or amperage demand? So far the info that gives me a ballpark figure is that of a popular 19" corded 110V mower with a 12A rating, i.e. 1320W. The amperage of a 36V motor of the same power would then be
1320W/36V = 37A. So at this point the 50A rated batteries would seem appropriate from this analysis. I would still like to know the actual specs on this motor to be more precise for this project. Since the price goes up dramatically with the amperage rating, I'm interested in finding the actual amperage needed instead of this estimate.
Jon, I use 18650 Lithium batteries with my black and decker. I measure about 10A at 36V when its running with no load. When cutting thick grass I estimate it could be twice that. My battery is 10S8P with 10A capable cells (from hoverboard packs) so the current isn't an issue for the cells themselves.
I have yet measured the current at heavy tall grass load. My lion pack 10s6p with 30A 2AH cells.
@@conjectural_technologies Thank you for the info.
@@caseymuni4097 Thank you for the info.
Mowing at night, at least electric isnt as loud.
when you are 15 feet away then 30 feet away... its almost not a sound.... its really cool. no smell either. i really like mowing now for long durations because, no smell.. its awesome.